Surveying instrument.



M. J. DIKEMAN.

SURVEYING INSTRUMENT.

APPLICATION FILED JAN. 2, 1913.

Patented Sept. 8, 1914.

3 SHEETSSHEBT 1.

' ITNESaSEEI I .ZNVENTOR. M 8. Wm 11mm Jlmmmm JETTORAQ M. J. DIKEMAN.

SURVEYING INSTRUMENT.

APPLICATION FILED JAN. 2, 1913.

Patented Sept. 8, 1914.

WITNESSES:

W as. WW.

ATTORNEY J Minor? .1; DIKEMAN, or nn'rnorr, n neteen.

SURVEYING 'msrnunnnr. I

Specification of Letters Patent.

Patented Sept. 8,

Application filed January 2,1913. Serial No. 739,651.

To all 10607771575 may concern:

Be it known that I, MYRON J. DIKEMAN, a

' citizen of the United States, residingat Detroit, county of Wayne,State of Michigan, have invented a certain new and useful Improvement inSurveying Instruments, and declare the following to be a full, clear,and exact deseription'of the same, such as will enable others skilled inthe art to which it pertains to make and use thesame, reference beinghad to the accompanying drawings, which form a part of thisspecification.

This invention relates to surveying instruments and has for its objectan instrument for automatically producing a delineation on a recordsheet carried'by the instrument of the profile of the ground over whichit is passed and also for automatically introducing marker stakes intothe ground at substantially equidistant points in a horizontal plane onthe line traversed, the varying levels of which being shown on therecordsheet relative to a datum or base line and on a reduced scale.

A further object is a device for the purpose stated that is simple inconstruction, automatic in operation, and accurate within the scope ofthe instrument.

These and further objects and novelties of the invention are hereinaftermore fully described and claimed and shown in the accompanying drawingsin which- Figure 1 is a plan view of a device embodying my invention andshowing the general relation of the parts thereof, their mode ofoperation, and the manner of their control whereby the various partsoperate in timed relation one with the other. Fig. 2 is a side elevationof the instrument showing ,the general relation of the profile producingand marker setting parts of the device. Fig. 8 is a front elevation ofthe profile produc ing part of the device. Fig. +1: is an elevation,partly in section, of the market setting portion of the device. Fig. 5is an elevation of the marker setting apparatus on line a"0c of Fig. 4.Fig. 6 is a detail illustrating the means 'for releasing and for holding.plunger utilized in setting the markers.

Fig. 7 is a detail showing the means employed for controllingtheoperation of the marker-setting apparatus by the profile producingapparatus and also showing the lneans for indicating on the record sheetthe relative point at which a marker is set in the ground. Fig. 8 is adetail of the lower end of the "pendulum-rod and the inclosingswingingframe carrying electrical contacts engaged by contacts on the rodwhenthe pendulum swings from the perpendicular.

S milar characters refer to similar parts throughout the drawings andspecification.

Thegeneral principles involved in producing a delineation on the recordsheet of the profile of the surface traversed by the instrument .isdisclosed in my Patent No.'.

958,794, hearing date of May 24th, 1910, but as the structure thereshown has been departed from in several important particulars nthedevice here shown, in order to operate apparatus for setting markersin the ground and indicating on the record sheet the relative positionof suclimarkers and in other particulars hereinafter mentioned, thegeneral operation of the device is here .decribed to make clear thefunction of the various parts, their relation one to the other,

and the methodand .means of timing the.

various operations.

The record sheet preferably used. with the device is the ordinaryprinted profile paper.

bearing vertical and horizontal lines usually used in the making ofprofiles although any paper of theproper texture and form may beutilized if desired. A considerable length, fifty yards more or less, iswound on the roller 1 and is unwound therefrom and wound on the roller 2by the action of a. spring motor geared thereto indicated at 3,

the position of the sheet being indicated by the dotted rectangle inFig. 3. The motor tends to continuously operate the rollers but thespeed of movement of the record sheet is accurately controlled in amanner hereinafter shown. The rollers 1 and 2 are mounted in an uprightframework 4 shown more clearly in Figs. 2 and 3, and also secured to theframework is a block 5 extend-' ing from the lower to the upper part ofthe framework and the record sheet is made todraw tightly across thisblock as may be understood from Fig. 1 in which the line of the sheet isindicated by dotted lines. A marking device of any approved type or formcontacts the sheet and presses against the block 5 producing adelineation of the profile of the ground on a reduced scale on therecord sheet by reason of its movement in a vertical plane while thesheet moves in block .8.

line are com uted and mar er against the s eet at a point supportedbythe "it iicted'that while the as lifi traced; on the sheet by reason ofthe move ment of the sheet under the fixedly positi'oned marker lftheprofileline'is a result" wt of the combinedfmovement of the sheethorizontally and. movement of the marking device 6 verticallythereacross except at'su'ch;

timesgas the device is traversing a level 'surface when the'profileline'is produced b the movement of'the sheet' alone as at such periodthe-marker 6 remains stationary.

the rofile of the surface traversed, a record of=tiieline over which thedevioe is passed is also "made by inserting inarker stakes in 1 magnum'atequidistant points in 'a her-i zontaliplane which may subsequently bere- 1 placed withipermanent stakes; "As the apps rates maybeiasc'endin"or descending an in-k: clindplanemhd ast e markers are'to be" set'a.teqfiidistant -pointsin a"horiz'ontal= plahe, the time 'interval(considering the tie vice moved at'constan-t speed) lbetweeiithe settingof the markers must be varied in" accord-withthe length ofliiietraversedin passing from one point in a' horizontalpla'ne to'. asucceeding point Etherein and this time" interval is regu1atedb'y theprofile scribed. I

producing-u apparatus as hereinafter 'de- 1 ".The'entire apparatus issupported .on the zpiatformof a wheeled vehicle a portion ofwhichis-shown Figs. land 2 and motion" is transmitted to the profiledelineating part of the device bymean's of the sproelnit 9 on thevehicle*'shaft 10', =siprocketi chain 1119116."

' procket 12lonthe' horizontal shaft- 13 as shown in said" Figs.and-in'z Figf3. The inner'en'd' of'the shaft13 i's provided with a bevel'"giear 14' meshing with a similar gear 15' K on the verticalshaft "16.This vertical shaft 16 extends up through the-platform of the vehicleand at the upper end is attached a-- horizontally positioned drivingdisk 17 Above the disk 17: and extending longitu dinally of the vehicleis ashaft 18 properly supported in bearings provided at each side of thedisk 17. On one end of the shaft 18 is a bevel gear 19 meshing with alike gear 20 on a'vertical screw threaded shaft 21'supported in theframework 4: as shown in Figs.

'- land 3. 111 threaded engagementwith the.

shaftf21 is a'boxing 22 which carries the marking device 6 heretoforementioned.-

Theboxing is held from rotation with the shaft 21 by means of thevertically posi- 'tioned ways 23,23 at each side of theshaft 21 whichare engaged bylaterally'extending lugs onthe boxing as shownm Fig. 3;.

Movement is imparted to the shaft 18 by ..means of a friction wheel 24splined thereon and hel'd fin' engagement with the driving diskfl'jtandwhe speed of rotation of the .shaft 18 and conse uently the speed ofmovelated by alterin the point of contact of the friction'whee 24 on thedisk 17. If the wlieel 24 is near the outer edge of the disk assiimed'bythewheel when the device" is traversing a nearly level surface. If the Idevice be traversing a truly level surface, the win addition'to'producing a delmeation of friction wheel" is positioned at the center ofthe driving disk and no rotation thereof takes place at which time themarker 6 remains stationa and traces a horizontal line 'on'th'e r'ec'ords eet by reason of the move- {nient 'of'the sheet only.

The baseline traced on the record sheet by 'the 'fixedly positionedmarking device 7 indicates the dlstance in a horizontal planeitraver'sed by'the device and the speed. of in'ovementiof the recordsheet must therefore be varied to accord with the time-inter. alrequired to pass over the surface the actual length of which may begreater than the distance traversed in a horizontal plane blue toinclinations thereof. The speed of movement of the record sheet istherefore regulated in the following manner: A roller '25 is mountedvertically in the framework 24 back of the record sheet Which is firmlygripped between said roller and a roller 26 ion the vertical "shaft 27also mounted in the framework. Rotation of the shaft 27 and roller 26thereon'allows the record sheet to wind on to the winding roll 2 and thespeed of rotation of the shaft 27 determines thes'peed of movement ofthe record sheet, the prime cause of which movement is the spring motor3 heretofore described as being geared to the winding roll 2. Althoughnot clearly shown, the lower end of the shaft 27 is provided with abevel gear meshing with a like gear on the horizontally positioned shaft28 extending longitudinally of the vehicle, and upon the outer end ofthe shaft is a worm wheel 29 engaged by a worm 30 on a shaft 31positioned at right angles to the shaft 28 and extending over thedriving disk 17 Splined on the shaft 31 is a friction Wheel 32contacting the drivin disk and the speed of rotation of the she t 31,shaft 28, and consequently the speed of movement of the record sheet, isdetermined by the position of the friction wheel 32 on the driving disk,that is-the and vice versa. The position of the fric- -ment vertically othe marker 6 is regution wheel 32 is regulated by a cam wheel 33 on ashaft 34 extending across and above the driving disk. The-wheel 33 isprovided with a circumferential cam groove 35 which, in passing aboutthe wheel, gradually passes across the face thereof and back and theangle the groove forms to the perpendicular, as seen in Fig. 3,determines the scope of the machine. The friction wheel 32 is providedwith a hub on which is a small wheel 36 engaging in the cam groove 35and rotative movement of the cam wheel therefore alters the position ofthe friction wheel 32 on the driving disk. The .cam wheel shaft 34 isalso provided with a pair of grooved wheels 37 and 38 positionedcentrally above the driving disk and a wire cable 39 for each wheel 37and 38 is wound once thereabout and passes over idlers 40 and 41 mountedin bearings on opposite sides of the driving disk and beyond theperiphery thereof as shown in Fig. 1. The free ends of each wire thenpasses beneath the grooved wheels. 37 and 38 and are each attached to asliding block 42 which rides in ways 43 extending between the supportsfor the idlers 40 and 41. The block 42 carries a friction wheel 24splined on the shaft 18 heretofore mentioned and a rotation of the shaft34 positions the friction wheel on the driving disk 17.

It is to be noted that the shaft 34 does not continuously rotate but, ashereinafter shown, is rotated to the right or left through an arc ofgreater or less degree by means of apparatus controlled by a pendulumwhose relative vertical position is determined by the inclination of thesurface traversed, and therefore, that the position of the frictionwheels 24 and 32 on the driving disk is regulated by variations in theinclination of the surface traversed. It is also to be noted that thespeed of horizontal movement of the record sheet should be decreased andthe speed of vertical movement of the marking device 6 increased as thedegree of inclination increases and vice versa due to the fact that the.length of the line traversed on an inclined plane is greater than thedistance between any two points on the line in a hori zontal plane shownby the datum or base line. Consequently, in turning the shaft 34 toposition the friction wheel 32 nearer the center of the driving disk 17to decrease the speed of movement of the record sheet, the arrangementof parts is also such as to position the friction wheel 24 nearer theperiphery of the driving disk 17 to increase the speed of verticalmovement of the marking device 6 and the profile line traced thereby istruly representative of the slope traversed. The same result is achievedwhether the de vice be ascending or descending a slope as in passingdown a slope the friction wheel 24 is moved across the driving disk onthe opposite side of the center thereof occupied by the wheel whenascending a slope and the shaft 18 therefore rotated in the oppositedirection at a speed corresponding to the degree of inclination. Thefriction wheel 32, however, will occupy the identical position on thedriving disk whether the device be ascending or descending a slope asthe point on the cam groove engaged by the wheel 36 in either case willbe at an equal distance either way from the neutral point engaged whenthe device is traversing a level surface.

The shaft 34 may be rotated by means of the bevel gear 44 thereon whichmeshes with a bevel gear 45 on the inclined shaft 46,

shown in Figs. 1, 2, and 3. Although not clearly shown, the shaft 46should be attached by means of a universal joint to a stub shaft onwhich the gear 45 is mounted in order to allow the shaft 46 to swing andbring the gear 47 on the lower end thereof into engagement with eitherbevel gear 48 or 49 on the horizontal shaft 50 which is continuouslyoperated by means of the spur gear 51 thereon meshing with an idler gear52 which in turn meshes with the spur gear 53 on the shaft 54. The shaft54 is operated by means of a bevel gear- 55 thereon meshing with thebevel gear 56 on the vertical shaft 16 as seen in Fig. 3. The shaft 50is thus continuously rotated and if the bevel gear 47 is thrown intomesh with the gear 48, the shaft 46 and consequently the shaft 34 willrotate in one direction and if the gear 47 be thrown into mesh with thegear 49 the shaft 34 will be rotated in the opposite direction. Also, ifthe gear 47 and shaft 46 be allowed to remain in a neutral position, theshaft 34 will remain idle. To rock the shaft 46 and produce the statedmovements of the gear 47, the lower end thereof is hung in a bearing inthe rock arm 57 attached to the rock shaft 58. Secured to the rock shaftis a lever 59 upon opposite ends of which are secured the armatures 60and 61 of the magnets 62 and 63 respectively and the lever 59, rockshaft 58, and inclined shaft 46 may be rocked by closing an electriccircuit through one or the other of said magnets 62 and 63. The flow ofcurrent to either of said magnets is controlled by a pendulum free toswing in a single vertical plane, the electric circuits being soarranged that the circuit controlling either magnet may be closed byaswinging of the pendulum in one direction or the other caused by theapparatus assuming a position at an inclination to a horizontal plane.The circuits controlling the magnets are shown diagrammatically inFig. 1. Both sets of magnets have a line 64 in common connected to aswitch-65. From the switch a line 66connects to one side of the batteryand from the opposite side of the battery a line 67 connects to themetal frame of the machine at 68'. The magnet 63 is also provided with aline 69 connected with the contact point 70 carried at the lower end ofthe vertically positioned, pivoted, channel bar or frame 71 andinsulated therefrom as may be seen in Fig. 8. The pendulum rod alsocarries a contact point- 72 so that when the device is descending aslope the pendulum swings forward until the contact 7 2 engages thecontact 70 and thus closesthe circuit through the metal frame of themachine. rocked and the gear 47 engages the gear 49. In like manner themagnet 62 is provided witha line 73 connecting it with the contact point7 4 carried by the channel frame 71 and the circuit controlling themagnet-is closed when the instrument is ascending a slope by reason ofthe pendulum swinging backward and the contact-75 thereon engages thecontact 74. This last mentioned movement of the pendulum closes thecircuit to and energizes the magnet 62 which draws the armature 60downward, rocks the shaft 46 and throws the gear 17 into mesh with thegear 48 which rotates the shaft 34 in a direction opposite to thatcaused by energizing the magnet 63.

It is apparent that should the gear 47 remain in mesh with either gear48 or 49, the shaft 34 would continuously rotate and, as it is desiredthat the shaft should rotate only to such extent that the frictionwheels 24 and 32 may be properly positioned on the driving disk 17 toproduce the speed of movement of the marking device 6 and the recordsheet required by reason of the inclination of the slope traversed,provision is made whereby the contacts closed by the swinging of thependulum either forward or back is broken practically as soon as theshaft 34 starts to rotate.

The means employed to break the contacts 7( 72 and 7475 is shown inFigs. 1-2- 3 and A standard 76' is attached to the base of the machineand the heretofore menf tioned channel frame 71 is pivoted to thestandard near th top thereof. Fixedly attached to the frame 71 is a gearsegment 77 which meshes with a spur gear 78 on the end of the shaft 3 1.The lower end of the frame 71 carries an open frant c 79 in which aresecured the contact points and 74 and through the frame 79 passes thependulum rod 80 carrying the contact points 72 and in axial alinementwith the companion pendulum rod is provided with a bob 81" and the upperend of the rod is pivotally supported from the bracket 82 attached tothe fixedstandard 76. As may be seen in Fig. 8, the pendulum rod is heldby thewires 83 and 84 in such manner that it may oscillate only in asingle vertical plane in order that the contacts may always be inalinement. Each wire 83 and 84 is secured at Thereupon the shaft 46 is'engagement by reason of movement of the pendulum due to the deviceascending ordescending a slope, one orth'e other of the magnets 62 or 63is energized throwing the bevel gear 47 into mesh with one or the otherof the bevel gears .48 or 49 on the shaft 50 thus rotatin the inclinedshaft 4.6 and bevel gear 45 mes ing with the bevel gear 44 on the shaft34 and this turning of the shaft 34 also turns the gear, 78 and swingsthe channel frame 71 by means of the segment 77 attached thereto whichbreaks the contacts made by the endulum and allows the bevel car 47 tofa l to neutral position. It is to e noted that this movement of theframe 71 is always in the same direction as the pendulum tends to swingand the contacts will continue to be alternately made and broken untilthe frame and pendulum assume a parallel relation with neither contactclosed. It therefore becomes evident that if the device he ascending ordescending a slight inclination, this parallel relation is i assumedsooner than if traversing an incli- Enation of greater degree and thisis pro 3' ductive of the desired result inasmuch as the 1 greater thedegree of inclination the greater r the degree of rotation'required ofthe shaft 3a to properly position the friction wheels 1 24-; and 32 onthe driving disk .to produce the ;neccssary variation in the speed ofmove- 3 ment' of the marking device 6 and the record sheet to accordwith the various time-interval's required to traverse the inclinationsencountered.

As heretofore mentioned, a marker stake is set in the ground atequidistant points in a horizontal plane on the line traversed therebyproducing a visible record of the line and, as hereafter shown, therecord sheet is marked to indicate thereon the relative points at whicha marker is set in the ground. In order that no inaccuracies may aresult the stake setting and record making points 72 and 74. Below theframe 7 9-, the j occur simultaneously and are controlled by the sametiming device. The setting of a marker state results from releasing aspring impelled plunger by means of a latch withdrawn-upon theenergization of a magnet 86. The-circuit for controlling the magnet isshown diagrammatically in Fig. 1 in which the line 87 is shown asconnecting one coil with one sid'eof'the battery, the other sideof'which is connected to the metal frame at 68: The other coilof'the'magnet is connected to the-insulated contact 88 by the wire'89.

Pivoted to the upper part of the framework 4 1s a. spring actuatedcontact lever 90,

: shown more clearly inFig. 1, and one end of the lever is engaged by anotched wheel 91 on the shaft 27 whose speed of rotation is cont-rolledin the manner heretofore described. Rotation of the shaft 27 and wheel91 raises the free end of the lever out of engagement with the contactpoint 88 which remains out of contact therewith until the endof-the'lever drops into a notch in the 7 wheel 91 as shown in full linesin Fig. 7

whereupon the circuit is completed and the coil 86 energized as one sideof the battery is connected to the frame and the lever 90 forms part ofthe circuit. As heretofore stated, the record sheet is allowed to moveat varying speeds to accord with the length of line traversed whichmovement is caused by rotation of the roller 2 under the action of thespring motor 3 and controlled by the rollers 25 and 26. The wheel 91beingon "the shaft 27 of the roller 26, therefore rotates in accord withthe varying speed of the record sheet which corresponds with thedistance traversed-in a horizontal plane and the stakes are consequentlyset at e ual dis tances apart in a horizontal plane, t e spacment withthe profile marking device 6. At

the time the lever; 90 assumes the position shown in fulllines in Fig.7, the point 93 strikes or contacts, the record sheet indicating'thereon the point at which a marker stake has been set in the ground,or, to be more exact, the pointmakes a mark on the sheet 'nearthe "upperedge and if a line. be

drawn therefrom to the baseline and at right angles therewith, the pointat which the line intersects th profile lineis the rela "tive point atwhich the stake has been set.

The markerset'ting portion of the device is-shown'm'ore fully in Figs. 1and 5'-'and comprises a revoluble cone-shaped, stake holder 100 beneathwhich is a stationary plate 101 having an" aperture 102 located abovethe stake receiving'channel 103 inthe' supporting block or base 111,and, as the holder'is intermittently revolved, the stakes,

which are loosely heldby staples as shown" in- Fig." 5, successivelydrop" into the receiving'jchannel one side of which may be conside'red'as'form'ing a continnation'of and at the same angle as the cone surfaceof the holder.) The-"stake, therefore, enters the channel at an angle-tothe perpendicular and falls beneath-a restraining spring 104which-'yieldably holds the stake and prevents it from assuming aperpendicular positionof its own accord which would allow it'to fall outof the lower end of the channel 103. The stake holder is revolved bymeans of the spring restrained lever 105 the end of which is adapted toen age the teeth of a ratchet wheel 106 secured to the holder shaft 107.The lever 105 is "moved in one direction by a spring 108, indicated inFig. 1, and is moved in the opposite'di-rection to engage the ratchet bythe operating bar 109 when it is raised to the position shown infulllines in Fig. 4. When the operating-bar reaches this position, astake drops into the receiving channel and rests above a flatsp'ring 110extending laterally into the block 111 in which the channel is'formedthrough theopening 112 therein. The spring 110 is secured to the end ofthe spring controlled lever 113, the normal position of which is shownin full linesin Fig. 4:,- and as the operating bar 109 and theblock orhead 'to which it is secured, descend" in the manner hereinafter shown,a pin 115 on the block engages the free end of the lever'113 forcing itinto the position shown by'dotted lines in said figure and this movementof the lever'113 sets-the stakeupright in the channel and holds it insuch position by means of the spring 110. At this period the plunger 116carried in the tubular casing 117 secured to the base 111'in= vertical.alinement with the receiving channel is in its uppermost position andthe coil spring 118, which propels the plunger and engages the headthereof, is under compres sion and is so held by the latch 119 shownmore clearly in Fig.6 which engages a notch in the plunger; As shown insaid figure, the latch'is also engaged by' the shortarmof the rock lever120 pivoted t'o thebra' cket 121 and the long arm of the lever isattached to the vertically positioned bar 122 to thelower en'd of whichissecured the'armat-ure' 123 ofthemagnet 86, held in normal position bythe spring bar 223. VVhen' the magnet is energized, as before described,the plunger 116is released which drives the stake out of "thereceiving'channel' with sufiicient force to insert it to'some extentinto the ground heneath thevehicle.- As shown in Fig. 6, a

buffer spring is located at the bottom of the tubular casing ada'pted torelieve. the apparatnsof shockincident't-o the discharge of a stakeby'the plunger; The plungeris reset eparatory to a succeeding operationby th'e'sli'ding head 'or blo'ck '114'which is providedwith-armsextending each side of the tllblllal" casingwhich engage beneath ins124iand 125"attached to the plungerhead- The"block 114"israised'bymeans' of the pit man 126 attached to the wheel 127 looselymounted on the shaft 128 which is contintws1y-rottted-bythe chain 129driven by 1 so p t .e -t avehis e =S a t Q-.- T ew l 127has a pawl 130attached thereto 68 ed t t haft-. 18 a c t W 15 the normal position ofthe parts being shown innfull lines; in Fig. 5, A springcontrolled"lever '132 is pivoted to one side of the base- 111 one'endof which isformed to en age the pawl.l30 and the opposite is forme and sopositioned as' to be engaged by the pin 125 on the plun'gerin.descending. The normal position of the lever-132 is shown in full linesinFi'g. 5- and wh en the plunger descends thepin 125. f orcesthe leverinto the position shown by dotted lines in said figure which forces the-pawl into engagement with the continuously rotating ratchet wheel andthe loosely mountedv wheel 12? is there-v upon rotated and the .blockl'li and the pluns ger 116, raised at which time the pawl has assumedthe position shownby dotted lines in Fig. 5 and in full lines in Fig. 4.As-the parts reach this position, the latch 119cm gages the notch in theplunger andthe wheel 127 .is' relieved of strain whereupon. the wheeland pawl return to normalposition.

'As-thewheel and pawl approach the normal position, the pawl is releasedfrom engagement' with the ratchet wheel and is stopped in position bybeing engaged by one end ofaspring controlled lever 133 pivshaft 128isonly utilized to'reset theapparatus for successive operations,theltime-interval between. which being controlled by the pendulum asabove set forth Having. thus briefly described my invention and its modeof operation, what I claim and desire to secure by Letters Patent ofthe.

United States is- 1. In apparatus of the character described, a vehicle,a record sheet carried thereby, a marking device adapted to produce aline on said sheet, meansoperated by movement of thevehicle for movingthe marking device across :thesheet, means for moving the sheet at rightangles, to the direction of movement of the marking device,

means'for regulating the speed of movement of the marking device and ofthe record sheet,v means formaking a visible record of the line.traversed on the surface passed over by thejvehicle, said: lastmentioned means being controlled by the means for regulatiplg'the speedof-. movement of therecord s set. i

apparatus; of the character. deat w ich, a r .1 sh t e e ab-Ms? thereby,a movable marking device for producing a profile .line on said sheet, a.stasheet, at right-Qanglesgto the direction. of

movement of the profile marking device, means for rggulatin thespeed ofmovement of the pro e. mar record sheet, vandmeans for making a visiblerecord of. the lineof the line traversed on the surface passed. over bythe vehicle,-said last mentioned means being centrolled by the means forregulating the speed ofgmove:

ment of the record sheet. 3. In apparatus. of

scribed, a vehicle, a record sheet vertically positioned thereon, amovable marking de? vice for producing a profile line on said sheet, astationary marking device for pro ing device and of the the character Nv ducing a datum line on said sheet, means for a moving the movablemarking device vertically across the sheet, means for simultaneouslymoving the record sheet horizontally, means for regulating the speed ofmovement of the record sheet whereby the datum line produced by saidmovement is indicative of the distance traversed by the vehicle in ahorizontal plane, means for regulating the 7 speed of movement of themovable marking device whereby the line traced thereby is in dicative ofthe surface distance traversed, and means for setting markers in thesurface .on the line traversed at equidistant points in a horizontalplane. l

4. In apparatus of the character described, a vehicle, a. record sheetcarried thereby, a movable marking device for producing a profile lineon said sheet, a stationary'marking device for producing a datum line onsaid sheet, means for moving the movable. marking device across thesheet, the line of said movement being fixed, means for simultaneouslymoving the record sheet atright angles to'the direction of movementofthe movable marking device, means for regulating the speed of movementof the record sheet whereby the datum line produced by saidmovement isindicative of the distance in a horizontal plane traversed by thevehicle, means for regulating the speed of movement of the movablemarking device whereby. the line traced thereby is indicative ofthesurface distance traversed, means forv setting, markers in the surfaceon the line traversed, means controlled by the speed regulating means ofthe record sheet whereby the markers: are set in the surface atequidistant points in a horizontal plane, and means for indicating onthe record sheet the 5.:1n apparatusof the characterdescribed',

.a vehiclemay record sheet. vertically posirelative point at which themarkers'are set.

tioned thereon, a movable marking device for producing a profile line onsaid sheet, the sheet being movable horizontally and the operation byalterations in the inclination to a horizontal plane of the surfacetraversed for positioning the friction wheels on the friction diskwhereby the speed of movement of the marking device and of the recordsheet may be altered to accord with the surface distance traversed,means for setting markers in the surface on the line traversed, andmeans controlled by said second friction Wheel for regulating thespacing of the markers.

6. In apparatus of the character described, a vehicle, a record sheetcarried thereby, means actuated by the movement of the vehicle adaptedto produce a delineation of the surface traversed on the record sheet,means for producing a datum line on said sheet indicative of thehorizontal distance traversed, marker setting apparatus carried by thevehicle, and means for actuating said apparatus to set the markers inthe surface traversed at equidistant points in a horizontal plane, saidmeans being controlled by the apparatus involvedin the producing of thedatum line.

line on the sheet, means actuated by the movement of the vehicle formoving the marking device across the sheet, means also actuated by themovement of the vehicle for I moving the record sheet atright angles tothe direction of movement of the marking device and" simultaneouslytherewith, appathe speed of movement of the marking evice, a secondfriction wheel engaging the disk for controlling the speed- 0f T,movement of the record sheet, means set in ing device for producingratus controlled by electric circuits for regulating the speed of themarking device and of the record sheet, a pendulum oscillatable byalterations in the de ree of inclination to a horizontal plane of t esurface traversed, and means whereby oscillation of the pendulum mayclose one or another of said cir:

'j 1 8. In apparatus of the character described, a*vehicle,a recordsheet carried thereby, a movable marking device for producing a profileline on said sheet, a stationary marka datum line onthe sheet, meansactuated y movement of the vehicle for moving the profile marking deviceacross the sheet, means for simultaneousl moving the record sheet atright angles to tlie direction of movement of the marking device,apparatus controlled through the medium of electric circuits forregulating the speed of movement of the profile marking device and ofthe record sheet, a pendulum oscillatable by alterations in the degreeof inclination to a horizontal plane of the surface traversed andadapted to close one or another of said circuits, a marker settingcation in the presence of two witnesses.

MYRON J. DIKEMAN.

Witnesses:

CHARLES E. WISNER, RICHARD A'LsPAs.

